He might find mementos of his parents. Maybe he'll come across old photos or letters that reveal more about their lives. This could give him a stronger connection to his heritage and a deeper understanding of who his parents were.
In this fanfiction, Naruto might find some long - hidden family secrets in his parents' house. Maybe he discovers old ninja tools that belonged to his father, which could give him new powers or insights into his family's past ninja techniques.
He could uncover the truth about his father's real mission before he died. Maybe it was something that was kept hidden from the village for some reason.
In some fanfictions, Naruto may become extremely bitter. He could feel a deep sense of betrayal and this might fuel his determination to become stronger, not for the sake of the village at first, but more for self - vindication. He might isolate himself from others and struggle with his identity.
The house might hold the truth about Naruto's birth. There could be records or something that reveals more about the circumstances of his birth, like why he was chosen to be the Jinchuriki of the Nine - Tails. This would be a huge revelation for Naruto.
He might find old mementos of his parents. Maybe a photo album that shows their life before he was born. It could be filled with pictures of his father's training days and his mother's gentle smiles. This discovery could give Naruto a deeper understanding of his family's history and make him feel more connected to them.
Emotionally, Naruto would have to deal with a whole new set of family relationships. He grew up without his parents, and now having them back would be a huge adjustment. He might struggle to fit into a 'normal' family dynamic, and there could be some friction as they all get to know each other again.
In some fanfictions, Naruto might find a super - powerful jutsu or artifact. For example, he could discover a long - lost forbidden jutsu that has the power to bring the dead back to life. Or perhaps he stumbles upon a magical item during one of his adventures that is said to be able to revive the deceased.
On a personal level, Naruto would finally get the family he always wanted. But it might also bring some confusion and adjustment issues. His parents would be from a different time, and they'd need to adapt to the new world Naruto lives in. For example, they might be shocked by the new technology and the changes in ninja warfare.